f.lux
Warms your screen's color at night to match the time of day
What is f.lux?
f.lux changes the color temperature of a computer display through the day: like sunlight in daytime, warmer after sunset and warmer still before bed. It works out the schedule from your location and usual wake time, and runs from a menu beside the system clock. The personal version is free on macOS, Linux and Windows. A paid Corporate Edition for Windows adds centrally managed installs for companies.
f.lux has a free plan. Paid plans start at $24 per device, one-time (Windows Corporate Edition). See every plan
Good for
- People who use a computer in the evening and want a warmer screen
- Users who want the change scheduled automatically from location and wake time
- Companies that need a centrally installed build for Windows PCs
Worth knowing
- The Corporate Edition is for Windows only and in English only, at $24 per device for the first 10 devices and $12 for each one after.
- The vendor treats company-recommended or IT-managed use as commercial use that needs the paid corporate license.
- It is not designed for advanced color work; the vendor suggests disabling it while using apps such as Photoshop.
- Mobile support is limited: the iOS version needs a jailbroken device and the Android build needs a rooted phone.
Key features
- Automatic color temperature
- Shifts the display's color temperature with the time of day: 6500K in daytime by default and warmer after sunset, timed from your location.
- Bedtime tied to your wake time
- A Bedtime setting removes as much alerting light as possible before sleep and moves with the wake time you set. Options cover sleeping in on weekends and an earlier bedtime for teens.
- Presets and custom colors
- Presets include Recommended colors, Classic f.lux and Working late, and Custom colors lets you pick a color temperature for each part of the day.
- Darkroom and Movie mode
- Darkroom removes all blue and green light and inverts colors. Movie mode lasts 2.5 hours and keeps colors and shadow detail with a warmer tone.
- Disable when color matters
- Can be turned off for an hour, until sunrise, or whenever a chosen app is active, which the vendor suggests for color-critical work.
- Philips Hue control
- The Windows version can drive Philips Hue White and Color Ambiance lights so that room lighting follows the same schedule as the screen.
f.lux pricing
- Starts at
- $24 per device, one-time (Windows Corporate Edition)
- Free plan
- The personal version is free on macOS and Linux, and free on Windows for personal use. Using it on a work computer needs your employer's knowledge and permission.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Personal | $0 | The standard app for macOS, Windows and Linux, free for personal use and supported by voluntary contributions. |
| Corporate Edition | $24per device, one-time; $12 per device after the first 10 | Windows-only build for companies: automated installs, automatic updates and home automation disabled, and one year of updates included. |
Read from justgetflux.com on Oct 6, 2026. Prices change, so confirm with f.lux before you buy.
Ways to pay less
- Other savingsVolume quotes from 500 seats
The corporate page says there are no discounts below 500 seats; for larger quantities the vendor quotes discounted rates and accepts purchase orders.
Stated on justgetflux.com
Works with
- Philips Hue
f.lux alternatives
- f.lux vs BetterDisplay
Free plan · from $21.99 one-time
Common questions
Is f.lux free?
f.lux has a free plan. The personal version is free on macOS and Linux, and free on Windows for personal use. Using it on a work computer needs your employer's knowledge and permission. Paid plans start at $24 per device, one-time (Windows Corporate Edition).
How much does f.lux cost?
f.lux lists 2 plans. Personal: $0. Corporate Edition: $24 per device, one-time; $12 per device after the first 10. Prices were read from justgetflux.com on Oct 6, 2026.
What platforms does f.lux work on?
f.lux is available on macOS, Windows and Linux.
Does f.lux offer any discounts?
f.lux publicly lists the following: Volume quotes from 500 seats.
Does f.lux have an Android app?
No Android app was listed when its pages were read on Oct 6, 2026. f.lux is listed for macOS, Windows and Linux.
Does f.lux have an iPhone app?
No iPhone app was listed when its pages were read on Oct 6, 2026. f.lux is listed for macOS, Windows and Linux.
Is f.lux open source?
f.lux is not described as open source on its own site, as read on Oct 6, 2026.
What does f.lux integrate with?
f.lux's listing names Philips Hue. A listing names up to eight integrations, so it may connect to more.
Who makes f.lux?
f.lux is made by f.lux Software LLC.
What are the alternatives to f.lux?
The closest alternatives to f.lux in our directory are BetterDisplay, MonitorControl and Twinkle Tray. Each one has a side-by-side comparison with f.lux.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 6, 2026.